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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 29, 2018 | Dec. 30, 2017 | Dec. 31, 2016 | Jan. 02, 2016 | Jan. 03, 2015
Income Taxes [Line Items] |  |  |  |  |
Corporate income tax rate |  | 35.00% |  |  |
Provisional discrete tax benefit in deferred tax liabilities |  | $ 48,200 |  |  |
Provisional reduction to current tax expense |  | (8,300) |  |  |
Income tax expense |  | 700 |  |  |
Decrease in income taxes payable |  | 7,600 |  |  |
Gross amount of unrecognized tax benefits |  | 1,259 | $ 1,754 | $ 727 | $ 2,107
Unrecognized tax benefits that would impact effective tax rate |  | 1,300 |  |  |
Unrecognized tax benefit, accrued interest |  | 100 | $ 200 |  |
Domestic Tax Authority |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Federal net operating loss carryforwards |  | 4,000 |  |  |
State and Local Jurisdiction |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
State net operating loss carryforwards |  | 6,200 |  |  |
Credit carryforwards |  | $ 3,100 |  |  |
Operating loss carryforwards expiration year |  | Through fiscal 2036 |  |  |
Unrecognized tax benefits that would impact effective tax rate |  | $ 300 |  |  |
Scenario, Forecast |  |  |  |  |
Income Taxes [Line Items] |  |  |  |  |
Corporate income tax rate | 21.00% |  |  |  |

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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 25 -Paragraph 20 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=96869850&loc=d3e28680-109314 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319 + Details
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- Definition Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32621-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32559-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32632-109319 + Details
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